Weird problem.

BZ Win · Post by **BZ Win** » Mon Jan 08, 2007 10:21 am

I have a strange banding that is occuring in my images...

Internal Blender renderer:

Notice what occurs in Indigo..

afecelis · Post by **afecelis** » Mon Jan 08, 2007 11:26 am

did you try going into edit mode, selecting all verts and hittihg ctrl+N to recalculate normals outside?

BZ Win · Post by **BZ Win** » Mon Jan 08, 2007 11:26 am

Yeah, tried that a few times now :E

afecelis · Post by **afecelis** » Mon Jan 08, 2007 11:32 am

can you upload the .blend somewhere to check it out?

CTZn · Post by **CTZn** » Mon Jan 08, 2007 11:36 am

Looks like you are using some pre-render smoothing, isn't it ? Well imo the rounded shape of the "hole" indicates that vertex are not merged, ie these are 2 different shapes, or one shape which situation prevent "ctrl+n" to work efficiently (double edges or something similar, check geometries around).

BZ Win · Post by **BZ Win** » Mon Jan 08, 2007 11:50 am

Nope, checked all that, and its still there.

No double verticies

No double faces

It is all one mesh :E

zsouthboy · Post by **zsouthboy** » Mon Jan 08, 2007 12:26 pm

CTRL+H I believe selects non manifold vertices (vertices that don't connect into a triangle) in blender.

I might be wrong, but lemme check.

zsouthboy · Post by **zsouthboy** » Mon Jan 08, 2007 12:28 pm

Sorry, wrong.

Here it is:

Select Non-Manifold

Mode: Mesh Edit Mode
Hotkey: SHIFTCTRLALTM

Menu: Select → Non-Manifold

This will select non-manifold parts of meshes and add them to current selection.

BZ Win · Post by **BZ Win** » Mon Jan 08, 2007 12:32 pm

Hmm...

I remodeled the "struts", and the problem went away by about 75%..

@zsouth..see, the problem is, most of my faces have 4 verticies :p

jurasek · Post by **jurasek** » Mon Jan 08, 2007 12:51 pm

upload .blend please

greetz,
jur

BZ Win · Post by **BZ Win** » Mon Jan 08, 2007 12:54 pm

Here it is.

http://bzfusion.net/poseidon/P2.blend

CTZn · Post by **CTZn** » Mon Jan 08, 2007 2:03 pm

Theses faces are very small in square scenes units, their area is under 0.000010 square units, maybe that's too small for Indigo. Try rescaling the model up, cause the normals and everything is ok, topology is manifold

afecelis · Post by **afecelis** » Mon Jan 08, 2007 2:32 pm

CTZn is right. I tried remodeling the part from scratch and got even worse results.
http://afecelis.gdlib.net/Indigo/mytry.jpg
Just try adding a default plane (which should be 2meters X 2meters) and compare its proportion to your ship's. You'll notice it's very small and indigo uses a real life scale criteria to light scenes.

BZ Win · Post by **BZ Win** » Mon Jan 08, 2007 3:06 pm

Ah, ok, that makes sense.

But Ill have to play with it more, because I scaled up the ship to 30 blender units, and they still appear. Ill just remodel the parts.

spy · Post by **spy** » Mon Jan 08, 2007 5:07 pm

don't remodel... i think it is blender bug.
here is how you can fix.

creat a new cube. select the mesh that has weird result..

and join that mesh to a new cube. (CTRL + J)

and boom your weird mesh become brand new.

Weird problem.

Weird problem.

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